Master Contraption

Whenever a creature or contraption is put into a graveyard from the battlefield, Master Contraption gets +1/+1 until end of turn.
When Master Contraption is put into a graveyard from anywhere, its owner shuffles all nonland cards from his or her graveyard into his or her library.
"To achieve the perfect Contraption you must first find the most willing of souls." -Jiru, Contraption Master